ID: 
473
Maker's Name: 
Bio-Dynamics, Ind USA.
Where made: 
USA
Dimensions: 
15 × 6.5 × 5 cm

This is a calibration kit for Unimeter colorimeter. It uses a fixed wavelength of 525 nanoMeters, and bandwidth 60nM.

There are four calibration points, using four standards, for zero%, 35%, 75%, and 100% transmission.

The kit contains four test standards: Water blank, Standard #1, Standard #2, Zero blank.